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  5. 4.1 Facts with NULL

4.1 Facts with NULL

NULL in databases can cause problems if not handled properly in queries. Many functions, operators and other constructs behave differently in PostgreSQL than Oracle. This is the reason why NULL handling is an important concept to look back at, while migrating Oracle database to PostgreSQL database.

Following are some articles which are good to start with for understanding NULL basics between Oracle and PostgreSQL database.

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